Samples and associated geological data are held at the British Geological Survey for Maritime Coastguard Agency (MCA), Civil Hydrography Programme (CHP), Bathymetric Survey HI1261; Approaches to Lowestoft (A), Area in SqKm: 2; Approaches to Lowestoft (B), Area in SqKm: 1; Approaches to Lowestoft (C), Area in SqKm: 3, (15/05/2008 to 29/05/2008), Standard: IHO S44ed4 Order 1. Contract: RRS (2006 LT). FY 2008/09. Contractor: MMT.